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Computers & Business Machines

Imagine the loss, 100 years from now, if museums hadn't begun preserving the artifacts of the computer age. The last few decades offer proof positive of why museums must collect continuously—to document technological and social transformations already underway.

The Museum's collections contain mainframes, minicomputers, microcomputers, and handheld devices. A Cray2 supercomputer is part of the collections, along with one of the towers of IBM's Deep Blue, the computer that defeated reigning champion Garry Kasparov in a chess match in 1997. Other artifacts range from personal computers to ENIAC, the Altair, and the Osborne 1. Computer components and peripherals, games, software, manuals, and other documents are part of the collections. Some of the instruments of business include adding machines, calculators, typewriters, dictating machines, fax machines, cash registers, and photocopiers

The Royal Typewriter Company manufactured this Royal Magic Margin typewriter around 1940. The typewriter’s patented Magic Margin design allowed the typist to set both the left and right hand margins with a simple push of a lever. With easy margin-switching, the Royal KMM could easily address envelopes, tabulate figures, and create tables.

The Royal Typewriter Company was founded in 1906 by Thomas Fortunes Ryan and Edward B. Hess, with Ryan providing the capital and Hess providing the inventiveness. Hess owned over 150 patents, many of which were assigned to the Royal Typewriter Company. Hess’s most noteworthy patents related to increasing the ease of typing, including an accelerating typebar, anti friction roller escapement, Magic Margins, and selective touch control.

American engineers have been calling small flaws in machines "bugs" for over a century. Thomas Edison talked about bugs in electrical circuits in the 1870s. When the first computers were built during the early 1940s, people working on them found bugs in both the hardware of the machines and in the programs that ran them.

In 1947, engineers working on the Mark II computer at Harvard University found a moth stuck in one of the components. They taped the insect in their logbook and labeled it "first actual case of bug being found." The words "bug" and "debug" soon became a standard part of the language of computer programmers.

This control panel is a small part of a very large programmable calculator built by Bell Telephone Laboratories of New York for the U.S. Army. By the mid-twentieth century, improving communications required complicated calculations. In order to improve the clarity and range of long distance voice signals, George Stibitz, a research mathematician at Bell Labs, needed to do calculations using complex numbers. Stibitz and Bell Labs engineer Sam Williams completed a machine for this purpose in 1939–it later was called the Bell Labs Model I. With the outbreak of World War II, Stibitz and Bell Labs turned their attention to calculations related to the aiming and firing of antiaircraft guns. Stibitz proposed a new series of relay calculators that could be programmed by paper tape to do more than one kind of calculation. The BTL Model 5. was the result. The machine consisted of 27 standard telephone relay racks and assorted other equipment. It had over 9000 relays, a memory capacity of 30 7-digit decimal numbers, and took about a second to multiply 2 numbers together. Two copies of the machine were built. This one was used by the U.S. Army for ballistics work at Aberdeen, Maryland and then at Fort Bliss, Texas. Machines that used relays were reliable, but slower than those using vacuum tubes, and soon gave way to electronic computers.

This gray-green machine has metal exterior and mechanism, and a black plastic plate above the cash drawer, plastic keys and a plastic window. Four columns with nine digit keys each are on the right front and then five columns, each with nine keys, for entering amounts from hundreds of dollars down to cents. Right of these keys are keys indicating types of transactions, as well as TOTAL and SUBTOTAL keys. Right of these is a column of keys labeled with Roman numerals from I to VIII. Next to this are eight windows in a column. Right of these is the operating bar. Indicators are at the top. A space at the front may be meant for a paper tape. The machine has an electric cord, whose measurements are not included in the dimensions. The paper tape is missing.

The machine was made by the National Cash Register Company of Dayton, Ohio in 1943. It is a size 211 (1) and has serial number 4060872. According to a label on the bottom of the cash drawer, it was made for the Mary Webb Beauty Salon on Orange Street in Wilmington, Delaware.

This machine has a metal case painted brown, and sits on top of eight cash drawers arranged in two columns of four drawers. It has four columns of plastic keys for registering dollars and cents ($10 to $90, $1 to $9, 10 cents to 90 cents, and 1cent to 9 cents). A column right of the number keys keys lettered A, B, D, E, H, K, L and M. A keyhole is right of each of the lettered keys. Right of these is a lever for setting the operation to be carried out and the motor bar.

Left of the keyboard are registers marked with the same letters as those in the column of lettered keys. Left of this is the space for the paper tape. The machine has serial number 390234. It also is marked: X 094(4) RS-8C.

This particular cash register was used at Lansburgh Department Store in downtown Washington, D.C. When City Stores Company purchased Lansburgh, they gave the machine to the Smithsonian.